Finding the Fourth Proportional to 121,587.64, 167,761.39 and 71,276.92
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Solution
The fourth proportional to 121,587.64, 167,761.39 and 71,276.92 is: 98,344.82
Step by Step Solution
- Step 1: Write the proportion equation
121,587.64 : 167,761.39 = 71,276.92 : x - Step 2: Convert to fraction form
121,587.64/167,761.39 = 71,276.92/x - Step 3: Cross multiply
121,587.64x = 167,761.39 × 71,276.92 - Step 4: Simplify right side
121,587.64x = 11,957,513,978.93 - Step 5: Solve for x
x = 11,957,513,978.93/121,587.64 - Step 6: Final answer
x = 98,344.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.